6643254 has 16 divisors (see below), whose sum is σ = 13311792. Its totient is φ = 2210208.

The previous prime is 6643249. The next prime is 6643261. The reversal of 6643254 is 4523466.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5532 + ... + 6624.

It is an arithmetic number, because the mean of its divisors is an integer number (831987).

Almost surely, 2^6643254 is an apocalyptic number.

6643254 is an abundant number, since it is smaller than the sum of its proper divisors (6668538).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6643254 is a wasteful number, since it uses less digits than its factorization.

6643254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2111.

The product of its digits is 17280, while the sum is 30.

The square root of 6643254 is about 2577.4510664608. The cubic root of 6643254 is about 187.9866257273.

The spelling of 6643254 in words is "six million, six hundred forty-three thousand, two hundred fifty-four".